21922400

素因数分解:

$2^5\times 5^2\times {\mathrm{67}}^1\times {\mathrm{409}}^1$

素因数の和:496

約数の個数: 72

約数和(自身を含む): 54449640

約数和(自身を除く): 32527240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 67, 80, 100, 134, 160, 200, 268, 335, 400, 409, 536, 670, 800, 818, 1072, 1340, 1636, 1675, 2045, 2144, 2680, 3272, 3350, 4090, 5360, 6544, 6700, 8180, 10225, 10720, 13088, 13400, 16360, 20450, 26800, 27403, 32720, 40900, 53600, 54806, 65440, 81800, 109612, 137015, 163600, 219224, 274030, 327200, 438448, 548060, 685075, 876896, 1096120, 1370150, 2192240, 2740300, 4384480, 5480600, 10961200, 21922400]

約数ペア:

[(1, 21922400), (2, 10961200), (4, 5480600), (5, 4384480), (8, 2740300), (10, 2192240), (16, 1370150), (20, 1096120), (25, 876896), (32, 685075), (40, 548060), (50, 438448), (67, 327200), (80, 274030), (100, 219224), (134, 163600), (160, 137015), (200, 109612), (268, 81800), (335, 65440), (400, 54806), (409, 53600), (536, 40900), (670, 32720), (800, 27403), (818, 26800), (1072, 20450), (1340, 16360), (1636, 13400), (1675, 13088), (2045, 10720), (2144, 10225), (2680, 8180), (3272, 6700), (3350, 6544), (4090, 5360)]